Finding the Fourth Proportional to 1,443.81, 1,992.46 and 854.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.81 : 1,992.46 = 854.84 : x
2. Step 2: Convert to fraction form
   1,443.81/1,992.46 = 854.84/x
3. Step 3: Cross multiply
   1,443.81x = 1,992.46 × 854.84
4. Step 4: Simplify right side
   1,443.81x = 1,703,234.51
5. Step 5: Solve for x
   x = 1,703,234.51/1,443.81
6. Step 6: Final answer
   x = 1,179.68